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person age function

/ Published in: SAS
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For proper calculation of human age using DOB and an as-of date.

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  1. /*
  2.    Age Function
  3. */ 
  4.  
  5. proc fcmp outlib=sasuser.funcs.trial;
  6.   function age (DOB, asOfDate);
  7.     if DOB < asOfDate then
  8. 		return(floor((intck('month',DOB,asOfDate) - (day(asOfDate) < day(DOB))) / 12));
  9. 	else
  10. 		return (_ERROR_);
  11.   endsub;
  12. run;
  13.  
  14. options cmplib = sasuser.funcs;
  15.  
  16. data _null_;
  17.   DOB = '15Feb2006'd;
  18.   today = '27Mar2012'd;
  19.  
  20.   sd = age(DOB, today);
  21.  
  22.   put sd=;
  23. run;

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